Unnamed Occurrence (ARDF - CR023), Black Bear Lake, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
55° 32' 36'' North , 132° 53' 38'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Klawock | 765 (2017) | 12.7km |
| Hollis | 112 (2011) | 16.3km |
| Craig | 1,248 (2017) | 17.7km |
| Thorne Bay | 483 (2017) | 28.3km |
| Hydaburg | 391 (2017) | 37.6km |
Mindat Locality ID:
200637
Long-form identifier:
mindat:1:2:200637:9
GUID (UUID V4):
07000313-9bc4-46bc-8807-57d7b2976e62
The Sealaska Corporation either holds the subsurface rights to the land around this occurrence or it has been identified for possible selection by them.
Location: Several mineral occurrences are in a large, geochemically anomalous area that includes all of the N1/2 of sections 13 and 14, T. 73 S., R. 82 E. The coordinates are at about the center of this area, which is about 1.8 mile southwest of the outlet of Black Bear Lake.
Geology: Several mineral occurrences are scattered over an area of about one square mile that is marked by strong geochemical anomalies (Hedderly-Smith, 1999 [Inventory]). The rocks in the area consist of metamorphosed volcanic and sedimentary rocks of the Luck Creek Breccia of Silurian and Ordovician age that have been intruded by small (Cretaceous?) granodiorite bodies (Eberlein and others, 1983; Brew, 1996). The rocks show local propylitic and phyllic alteration. Samples of hornfelsed and pyritized rocks contained up to 1,237 parts per million (ppm) copper; samples of molybdenite-bearing quartz-sulfide veins contained up to 1,517 ppm copper and 1,529 ppm molybdenum. The geochemical anomalies and mineral occurrences suggest a buried porphyry-copper deposit.
Age: Possibly related to a buried Cretaceous intrusion.
Alteration: Hornfelsing and local propylitic and phyllic alteration.
Commodities (Major) - Cu, Mo
Development Status: None
Deposit Model: Buried porphyry copper deposit?
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
Other Databases
| Link to USGS - Alaska: | CR023 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
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References
